3v4l.org

run code in 300+ PHP versions simultaneously

@ 2015-03-04T14:19:05Z

<?php

function makePalindrome($word)
{
    $result = 0;
    
    $chars = str_split($word);
    
    $halfWord = round(count($chars)/2, 0, PHP_ROUND_HALF_DOWN);
    
    var_dump($halfWord);exit;
    
    for($index = 0; $index >= $halfWord; $index++)
    {
        if($word != strrev($word))
        {
            $mirrorCharPos = count($chars) - $index - 1;
            
            $mirrorChar = $chars[$mirrorCharPos];

            if(isset($mirrorChar))
            {
                $result += ord($mirrorChar) - ord($char);

                $chars[$mirrorCharPos] = $char;
            }
            
            $word = join('', $chars);
        }else{
            
            break;
        }
    }

    return $result;
}

$wordToTest1 = 'aaa';
echo 'test1: ' . makePalindrome($wordToTest1) . PHP_EOL;
$wordToTest2 = 'abc';
echo 'test2: ' . makePalindrome($wordToTest2) . PHP_EOL;
$wordToTest3 = 'abcde';
echo 'test3: ' . makePalindrome($wordToTest3) . PHP_EOL;

Output for git.master, git.master_jit, rfc.property-hooks: float(1)

This tab shows result from various feature-branches currently under review by the php developers. Contact me to have additional branches featured.

Active branches

Archived branches

Once feature-branches are merged or declined, they are no longer available. Their functionality (when merged) can be viewed from the main output page

2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

preferences:dark modelive preview

64.36 ms | 401 KiB | 8 Q